#form2
{  
    width:120px;  
    background:gray;  
    text-align:center;  
    display:none;  
    float:right;  
}  
#form2 input[type=text],#nomGrupo [type=password]  
{  
    background:black;  
    color:white;  
    display:block;  
    margin-left:10px;  
    width:100px;  
}  
